Thermal barrier coating protected by thermally glazed layer and method for preparing same
    1.
    发明授权
    Thermal barrier coating protected by thermally glazed layer and method for preparing same 失效
    由热釉层保护的热障涂层及其制备方法

    公开(公告)号:US06933061B2

    公开(公告)日:2005-08-23

    申请号:US10317730

    申请日:2002-12-12

    摘要: A thermal barrier coating for an underlying metal substrate of articles that operate at, or are exposed to, high temperatures, as well as being exposed to environmental contaminant compositions. This coating comprises an inner layer nearest to the underlying metal substrate comprising a ceramic thermal barrier coating material having a melting point of at least about 2000° F. (1093° C.), as well as a thermally glazed outer layer having an exposed surface and a thickness up to 0.4 mils (about 10 microns) and sufficient to at least partially protect the thermal barrier coating against environmental contaminants that become deposited on the exposed surface, and comprising a thermally glazeable coating material having a melting point of at least about 2000° F. (1093° C.) in an amount up to 100%. This coating can be used to provide a thermally protected article having a metal substrate and optionally a bond coated layer adjacent to and overlaying the metal substrate. The thermal barrier coating can be prepared by forming the inner layer comprising the ceramic thermal barrier coating material, followed by depositing the thermally glazeable coating material on the inner layer, and then thermally melting the thermally glazeable coating material to form the thermally glazed outer layer.

    摘要翻译: 用于在高温下操作或暴露于高温以及暴露于环境污染物组合物的制品的基础金属基底的热障涂层。 该涂层包括最接近下面的金属基底的内层,该内层包括具有至少约2000°F(1093℃)的熔点的陶瓷热障涂层材料,以及具有暴露表面的热上光外层 并且厚度高达0.4密耳(约10微米),并且足以至少部分地保护热障涂层免受沉积在暴露表面上的环境污染物,并且包括具有至少约2000的熔点的热可釉的涂层材料 °F(1093℃),最高达100%。 该涂层可用于提供具有金属基底和任选的与金属基底相邻并覆盖金属基底的粘结涂层的热保护制品。 可以通过形成包括陶瓷热障涂层材料的内层,然后在内层上沉积热可釉涂层材料,然后热熔融热可釉涂层材料以形成热釉面外层来制备热障涂层。

    Method and apparatus for laser cutting a trench
    3.
    发明授权
    Method and apparatus for laser cutting a trench 有权
    用于激光切割沟槽的方法和装置

    公开(公告)号:US08319146B2

    公开(公告)日:2012-11-27

    申请号:US12435547

    申请日:2009-05-05

    IPC分类号: B23K26/38

    摘要: A system for producing at least one trench to improve film cooling in a sample is provided. The system includes at least one laser source outputting at least one pulsed laser beam. The pulsed laser beam includes a pulse duration including a range less than about 50 μs, an energy per pulse having a range less than about 0.1 Joule, and a repetition rate with a range greater than about 1000 Hz. The system also includes a control subsystem coupled to the laser source, the control subsystem configured to synchronize a position of the sample with the pulse duration and energy level in order to selectively remove at least one of a thermal barrier coating, a bondcoat and a substrate metal in the sample to form the at least one trench.

    摘要翻译: 提供一种用于生产至少一个沟槽以改善样品中的膜冷却的系统。 该系统包括输出至少一个脉冲激光束的至少一个激光源。 脉冲激光束包括包括小于约50μs的范围的脉冲持续时间,具有小于约0.1焦耳的范围的每脉冲的能量以及范围大于约1000Hz的重复率。 该系统还包括耦合到激光源的控制子系统,该控制子系统被配置为使样本的位置与脉冲持续时间和能量水平同步,以选择性地去除热障涂层,粘合涂层和基底中的至少一个 金属,以形成至少一个沟槽。

    Method of forming cooling holes in a ceramic matrix composite turbine components
    4.
    发明授权
    Method of forming cooling holes in a ceramic matrix composite turbine components 有权
    在陶瓷基复合涡轮机部件中形成冷却孔的方法

    公开(公告)号:US06441341B1

    公开(公告)日:2002-08-27

    申请号:US09595866

    申请日:2000-06-16

    IPC分类号: B23K2618

    摘要: A method for producing apertures in hot section components of gas turbine engines made from ceramic matrix composites that have at least one oxidizable component. The method involves forming the apertures using a laser beam controlled by parameters that ablate the ceramic matrix composite in the path of the beam, while simultaneously heating the matrix material, SiC or SiN, to a sufficient temperature to oxidize it to form a silica. Sufficient heat is supplied by the beam to melt the silica to cause it to flow. The melted silica is quickly solidified as recast silica along the walls of the newly created aperture before it has an opportunity to flow and form undesirable geometries. The wall of the aperture is formed of recast silica that is a smooth surface and that forms an oxidation barrier to inhibit any further oxidation of the underlying composite as it is exposed to the high temperatures and oxidative, corrosive atmosphere of an operating gas turbine.

    摘要翻译: 一种用于在具有至少一种可氧化组分的陶瓷基复合材料制成的燃气涡轮发动机的热段部件中产生孔的方法。 该方法包括通过使用在梁的路径中烧蚀陶瓷基体复合材料的参数控制的激光束,同时将基体材料SiC或SiN加热至足以使其氧化形成二氧化硅的激光束。 通过梁供应足够的热量来熔化二氧化硅以使其流动。 熔融的二氧化硅在其具有流动和形成不期望的几何形状的机会之前,沿着新生成的孔的壁快速固化为重铸硅石。 孔的壁由重新形成的二氧化硅形成,其是光滑的表面,并且形成氧化屏障,以在暴露于工作燃气轮机的高温和氧化,腐蚀性气氛的情况下抑制下面的复合材料的任何进一步的氧化。

    SYSTEM AND METHOD FOR IMPROVED FILM COOLING
    5.
    发明申请
    SYSTEM AND METHOD FOR IMPROVED FILM COOLING 有权
    改进膜片冷却的系统和方法

    公开(公告)号:US20100282721A1

    公开(公告)日:2010-11-11

    申请号:US12435547

    申请日:2009-05-05

    IPC分类号: B23K26/38

    摘要: A system for producing at least one trench to improve film cooling in a sample is provided. The system includes at least one laser source outputting at least one pulsed laser beam. The pulsed laser beam includes a pulse duration including a range less than about 50 μs, an energy per pulse having a range less than about 0.1 Joule, and a repetition rate with a range greater than about 1000 Hz. The system also includes a control subsystem coupled to the laser source, the control subsystem configured to synchronize a position of the sample with the pulse duration and energy level in order to selectively remove at least one of a thermal barrier coating, a bondcoat and a substrate metal in the sample to form the at least one trench.

    摘要翻译: 提供一种用于生产至少一个沟槽以改善样品中的膜冷却的系统。 该系统包括输出至少一个脉冲激光束的至少一个激光源。 脉冲激光束包括包括小于约50μs的范围的脉冲持续时间,具有小于约0.1焦耳的范围的每脉冲的能量以及范围大于约1000Hz的重复率。 该系统还包括耦合到激光源的控制子系统,该控制子系统被配置为使样本的位置与脉冲持续时间和能量水平同步,以选择性地去除热障涂层,粘合涂层和基底中的至少一个 金属,以形成至少一个沟槽。